天然山梨酸

Sorbic Acid, Natural 110-44-1 C6H8O2 99-101% Colorless needles or as white to off-white free flowing powder,99-101% "Appearance Colorless needles or as white to off-white free flowing powder Identification Pass test Assay 99-101% Melting point 132~135℃ Spectrometry A propan-2-ol solution(1 in 4000000) shows absorbance max at 252-266nm. Test for double bonds Passes testing Solubility Slightly soluble in water, soluble in ethanol Water 0.5% max Residue on ignition 0.2% max Aldehydes 0.1% max(as Formaldehyde) Arsenic 3ppm max Lead 2ppm max Mercury 1ppm max Heay metals(as Pb) 10ppm max"